Wheat pilot production/demonstration plots in Seiyal Kali, Gandatu and Kaboushia Schemes, 1991/92 [Sudan]

abonado fraccionado agricultural economics atelier pilote conditionnement control de plagas crop yield date de semis empaquetado evaluation extension extension activities fecha de siembra irrigation lutte antiravageur packaging pest control pilot plants plant production rendement des cultures rendimiento de cultivos riego sandy soils sol sableux soudan sowing date split dressings sudan suelo arenoso triticum aestivum variedades varieties vulgarisation